Shipping-flask for anhydrous ammonia



(No Model.) I

T. J. GOLDSGHMID. SHIPPING- PLASK FOR ANHYDR'OUS AMMONIA.

No. 479,592. Patented July 26, 1892.

A TTOFINEY.

UNITED STATES PATENT O FICE.

THEODORE J. GOLDSCHMID, OF PHILADELPHIA, PENNSYLVANIA.

SHlPPlNG-FLASK FOR ANHYDROUS AMMONIA.

SPECIFICATION forming part of Letters Patent No. 479,592, dated July 26,1892.

Application filed March 1'7, 1892. Serial No. 425,247. (No model) To allwhom it may concern:

Be it known that I, THEODORE J: GOLD- SCHMID, a citizen of the UnitedStates, residing in the city and county of Philadelphia, State ofPennsylvania, have invented a new and useful Improvement inShipping-Flasks for Anhydrous Ammonia, which improvement is fully setforth in the following specification and accompanying drawings.

My invention consists in providing a shippin g-flask for anhydrousammonia at the valve end thereof with a cap and novel means forattaching the same to the tank, whereby the valve thereof may beinclosed and improper access thereto prevented.

Figure 1 represents a longitudinal section of a portion of ashipping-flask for anhydrous ammonia embodying my invention. Fig. 2represents an end view of a portion thereof. Fig. 3 represents asectional view of a modification of a portion of the flask.

Similar letters of reference indicate corresponding parts in all thefigures.

Referring to the drawings, A designates a portion of a shipping-flaskfor anhydrous ammonia, and B designates the valve thereof, the samebeing secured to the head 0 of said flask, said head being concave ordished and having its end continued outwardly and somewhat converging orinwardly, thus forming the rim D and providing the chamber E for saidvalve B.

F designatesa cap for closing the chamber E and preventing improperaccess to the valve B, said cap being of the form of a curved or othersuitably-shaped plate with a diverging lug G,which has a bearing on theinner face ofthe rim D of the wall. At another portion of the cap is anopening H to receive the securing-bolt J, which enters the chamber E andis provided with a nut K, which is adapted to abut against the innerface of the rim D of the wall 0, so that when the bolt is properly,turned the nut is tightened against said rim D, whereby the cap isfirmly connected with the flask.

Continuous of the wall of the opening H within the chamber E is thechannel L, on the inner sides of which are the inclined planes or guidesM, against which the nut K rests and is adapted to ride, it beingnoticed that the rise of said guides M is in outward direction.

The operation is as follows: The cap is represented as secured inposition; but when the same is to be removed in order to open thechamber E to admit access to the valve or for other purposes the bolt Jis turned, it being noticed that the head of the same is on the outsideof the cap, so that it may be readily engaged by a wrench. As the nut isprevented from turning owing to the walls of the channel L, which itfreely occupies, it rides down the guides M, whereby it is removed fromthe rim D of the wall 0, thus unlocking the cap, which latter may now beswung outwardly and entirely removed, if so desired, thus uncovering thevalve-chamber. the cap is restored, the bolt J is properly turned,whereby the nut is carried up the inclined guides M and tightenedagainst the rim D, it now being seen that the cap is forcibly held uponthe rim D and thereby reliably retained in closed position by the actionof said nut and the head of the bolt. It will also be seen that,excepting the head of the bolt, the fastenings for the cap are concealedand inaccessible unless the bolt is properly operated.

It is evident that more than one bolt may employed, in which case theproper number of openings is made in the cap, each being provided withan inclined guide for the nut, it being also evident that the bolt maybe reversed, so that its head rests on the guides M and is adapted totighten against the rim D. In this case the nut is in the end of thebolt outside of the cap, as shown in Fig. 3.

Having thus described my invention,what I claim as new, and desire tosecure by Letters Patent, is

1. A shipping-flask for anhydrous ammonia, provided with a cap forclosing the valvechamber thereof and a bolt and nut for tightly holdingsaid cap in position on the flask, the nut being within said chamberresting on an inclined guide and the head of the bolt outside of thecap, said parts being combined substantially as described.

2. Ashipping-flask for anhydrous ammonia, provided with a cap forclosing the valve chamber thereof, said cap having an opening When Idescribed, whereby said bolt engages with the rim of the flask throughthe medium of said nut, as stated.

4. A shipping-flask for anhydrous ammonia, having a cap for closing thevalve-chamber thereof, said cap being provided with a bolt, a nut, and alug for tightening the same on the rim of the flask, substantially asdescribed.

THEODORE J. GOLDSCHMID.

Witnesses:

JOHN A. VVIEDERSHEIM, A. P. JENNINGS.

